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There is more to a bird than simply feathers. And just because birds evolved from a single flying ancestor doesn't mean they are structurally all the same. With over 385 stunning drawings depicting 200 species, The Unfeathered Bird is a richly illustrated book on bird anatomy that offers refreshingly original insights into what goes on beneath the feathered surface. Each exquisite drawing is made from an actual specimen and reproduced in sumptuous large format. The birds are shown in lifelike positions and engaged in behavior typical of the species: an underwater view of the skeleton of a swimming loon, the musculature of a porpoising penguin, and an unfeathered sparrowhawk plucking its prey. Jargon-free and easily accessible to any reader, the lively text relates birds' anatomy to their lifestyle and evolution, examining such questions as why penguins are bigger than auks, whether harrier hawks really have double-jointed legs, and the difference between wing claws and wing spurs. A landmark in popular bird books, The Unfeathered Bird is a must for anyone who appreciates birds or bird art. A unique book that bridges art, science, and history Over 385 beautiful drawings, artistically arranged in a sumptuous large-format book Accessible, jargon-free text--the only book on bird anatomy aimed at the general reader Drawings and text all based on actual bird specimens Includes most anatomically distinct bird groups Many species never illustrated before

Ornithology --- Birds --- Fieldwork. --- Adaptation. --- Behavior. --- Anatomy.

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This beautifully illustrated and user-friendly book presents the most up-to-date information available about the natural histories of birds of the Sierra Nevada, the origins of their names, the habitats they prefer, how they communicate and interact with one another, their relative abundance, and where they occur within the region. Each species account features original illustrations by Keith Hansen. In addition to characterizing individual species, Birds of the Sierra Nevada also describes ecological zones and bird habitats, recent trends in populations and ranges, conservation efforts, and more than 160 rare species. It also includes a glossary of terms, detailed maps, and an extensive bibliography with over 500 citations.

Birds --- Aves --- Avian fauna --- Avifauna --- Wild birds --- Amniotes --- Vertebrates --- Ornithology

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historical ecology --- landscape ecology --- biodiversity --- Vlaams-Brabant --- forests --- insects --- entomology --- ornithology --- birds --- Belgium --- 986.3 --- Dijlevallei--flora --- Dijlevallei--fauna

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birds --- Biodiversity --- ornithology --- Animal behaviour --- Oiseaux --- Questions et réponses --- Évolution --- Écologie --- Oiseaux - Questions et réponses --- Oiseaux - Évolution --- Oiseaux - Écologie --- Birds --- Ethology

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Modern birds (Neornithes) are represented by two big lineages, the Palaeognathae (Tinamiformes + Ratitae) and the Neognathae [Galloanserae + Neoaves (Metaves + Coronoaves)]. Both clades sum approximately 10,000 species of which 60% are Passeriformes (the most diverse clade of terrestrial vertebrates). A comparison between the past and the present reveals a complex and hallmarked evolutionary and biogeographic history which would have begun over 65 million years ago. For South America (SA) this includes: (1) the presence of taxa with uncertain affinities and the absence of Passeriformes during the Paleogene; (2) a progressive and accelerated increase of the species starting at the Neogene (Miocene); (3) important extinct lineages (e.g. Phorusrhacidae, Teratornithidae) that migrate to North America after the rising of the Panamá isthmus; (4) groups with major diversification in the Neogene that survives nowadays represented by scarce species endemic of SA (Cariamidae) or that inhabits mainly in the southern hemisphere (Anhingidae); (5) very diverse living groups with scarce (e.g., Passeriformes) or none (e.g., Apodiformes) fossil record in SA, which stem-groups are registered in Europe. Apparently, the changes in diversity of the south American Neornithes have been the result of successive radiation, biogeographic connections with North America and in a minor scale, some extinctions. The opening of the Drake´s passage and the occurrence of the circumpolar Antarctic flow are not sufficient causes to explain the highly disparity between the weddelians penguins (Sphenisciformes) of Antartica and those of the patagonian Atlantic Ocean.

Birds -- Classification. --- Birds -- Evolution -- Antarctica. --- Birds -- Evolution -- South America. --- Birds -- Evolution. --- Birds, Fossil. --- Birds, Fossil --- Paleobiogeography --- Paleontology --- Birds --- Geology --- Earth & Environmental Sciences --- Paleozoology --- Evolution --- Dispersal --- Caenozoic Era --- Cainozoic Era --- Cenozoic Era --- Aves --- Avian fauna --- Avifauna --- Wild birds --- Earth sciences. --- Paleontology. --- Evolutionary biology. --- Earth Sciences. --- Plant Systematics/Taxonomy/Biogeography. --- Evolutionary Biology. --- Amniotes, Fossil --- Vertebrates, Fossil --- Amniotes --- Vertebrates --- Ornithology --- Paleontology . --- Evolution (Biology). --- Animal evolution --- Animals --- Biological evolution --- Darwinism --- Evolutionary biology --- Evolutionary science --- Origin of species --- Biology --- Biological fitness --- Homoplasy --- Natural selection --- Phylogeny --- Fossilogy --- Fossilology --- Palaeontology --- Paleontology, Zoological --- Historical geology --- Zoology --- Fossils --- Prehistoric animals in motion pictures --- Plant systematics. --- Plant taxonomy. --- Botanical classification --- Botanical systematics --- Botanical taxonomy --- Botany --- Classification --- Plant biosystematics --- Plant classification --- Plant systematics --- Plant taxonomy --- Systematic botany --- Systematics (Botany) --- Taxonomy, Plant --- Plant taxonomists --- Plants